Online DDL in Vitess 16+: choosing between vitess, gh-ost, and pt-osc strategies for large sharded tables
Context Vitess Online DDL supports managed, non-blocking schema migrations through several strategies: the built-in vitess (VReplication-based) strategy, plus orchestrated gh-ost and pt-osc . The strategy is selected per migration, for example via @@ddl_strategy or the ApplySchema DDL strategy flag. Documentation for recent major releases (16 and later) desc
vitess